Agilent X-Series Signal Generators SCPI Command Reference 255
Arb Commands
Dmodulation Subsystem–N5172B/82B with Option 431 ([:SOURce]:RADio:DMODulation:ARB)
This command sets the modulation type for the digital modulation personality.
*RST QPSK
:MODulation:UFSK
Supported N5172B/82B with Option 431
[:SOURce]:RADio:DMODulation:ARB:MODulation:UFSK <“filename”>
[:SOURce]:RADio:DMODulation:ARB:MODulation:UFSK?
This command selects the user FSK file to use when the :MODulation[:TYPE] is set to UFSK.
For more information on the file name syntax, see “File Name Variables” on page 13.
Key Entry Select User FSK
:MODulation:UIQ
Supported N5172B/82B with Option 431
[:SOURce]:RADio:DMODulation:ARB:MODulation:UIQ <“filename”>
[:SOURce]:RADio:DMODulation:ARB:MODulation:UIQ?
This command selects the user FSK file to use when the :MODulation[:TYPE] is set to UIQ.
For more information on the file name syntax, see “File Name Variables” on page 13.
Key Entry Select User I/Q
:MODulation:UQPSk[:GAIN]
Supported N5172B/82B with Option 431
[:SOURce]:RADio:DMODulation:ARB:MODulation:UQPSk[:GAIN] <val>
[:SOURce]:RADio:DMODulation:ARB:MODulation:UQPSk[:GAIN]?
This command sets the Unbalanced QPSK modulation I versus Q gain, which is the difference in
amplitude between I and Q. UQPSK is a 2 bits per symbol modulation where the I constellation
values are typically set to be larger or smaller than the Q constellation values. This factor is known
as the I Gain. Use this command when the :MODulation[:TYPE] is set to UQPSk.
The variable <val> is expressed in units of dB and the resolution is 0.01 dB.
*RST 0 dB
Range -50 to 50 dB
Key Entry ASK BPSK QPSK Unbalanced QPSK IS–95 QPSK Gray Coded QPSK
OQPSK IS–95 OQPSK 4 DQPSK 8PSK 16PSK D8PSK EDGE MSK
2–Lvl FSK 4–Lvl FSK 8–Lvl FSK 16–Lvl FSK C4FM 4QAM 16QAM
32QAM 64QAM 128QAM 256QAM 1024QAM Select User IQ Select User IQ
Select User FSK VSA 16QAM VSA 32QAM VSA 64QAM VSA 128QAM
VSA 256QAM VSA 512QAM VSA 1024QAM
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